Effect of Operating Temperature on The Kinematic Viscosity of Ms-20 Oil in The M-14p Aircraft Engine

22 Dec
Posted on Author

Authors: MSc Van Huong Ngo, MSc Trong Son Phan, MSc The Son Nguyen, MSc Le Phan, BSc Bao Le Nguyen Gia

Abstract: Kinematic viscosity is a critical parameter governing lubrication performance in aircraft piston engines. For the M-14P radial engine, MS-20 oil has been widely used under varying operating temperature conditions. This study investigates the influence of operating temperature on the kinematic viscosity of MS-20 oil. The viscosity–temperature relationship of MS-20 oil is analyzed using reference temperature data and the ASTM D341 Walther equation, specifically within the typical operating range of the M-14P engine. The results indicate a continuous and stable decrease in viscosity with increasing temperature, thereby providing a quantitative basis for evaluating lubrication behavior under varying engine operating conditions.

DOI: http://doi.org/10.5281/zenodo.18016688